Alphatetraviridae

Alphatetraviridae
Virus classification
Group:	Group IV ((+)ssRNA)
Family:	Alphatetraviridae
Genera
Omegatetravirus Betatetravirus

Alphatetraviridae is a family of viruses. Moths and butterflies serve as natural hosts. There are currently ten species in this family, divided among 2 genera. Infection outcome varies from unapparent to lethal.

Taxonomy

Group: ssRNA(+)

Order: Unassigned

• Family: Alphatetraviridae

  • Genus: Betatetravirus

    • Antheraea eucalypti virus
    • Darna trima virus
    • Dasychira pudibunda virus
    • Nudaurelia capensis beta virus
    • Philosamia cynthia x ricini virus
    • Pseudoplusia includens virus
    • Trichoplusia ni virus
  • Genus: Omegatetravirus

    • Dendrolimus punctatus virus
    • Helicoverpa armigera stunt virus
    • Nudaurelia capensis omega virus

Structure

Viruses in Alphatetraviridae are non-enveloped, with icosahedral geometries, and T=4 symmetry. The diameter is around 40 nm. Genomes are linear and non-segmented, bipartite, around 6.5kb in length.

Genus	Structure	Symmetry	Capsid	Genomic Arrangement	Genomic Segmentation
Omegatetravirus	Icosahedral	T=4	Non-Enveloped	Linear	Segmented
Betatetravirus	Icosahedral	T=4	Non-Enveloped	Linear	Monopartite

Life Cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded rna virus transcription is the method of transcription. Translation takes place by leaky scanning, and ribosomal skipping. Moths and butterflies serve as the natural host. Transmission routes are oral.

Genus	Host Details	Tissue Tropism	Entry Details	Release Details	Replication Site	Assembly Site	Transmission
Omegatetravirus	Moths; butterflies	Midgut	Cell receptor endocytosis	Budding	Cytoplasm	Cytoplasm	Oral
Betatetravirus	Moths; butterflies	Midgut	Cell receptor endocytosis	Budding	Cytoplasm	Cytoplasm	Oral

External links

• Viralzone: Alphatetraviridae
• ICTV